The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 12, 1982
Filed:
Mar. 05, 1980
Applicant:
Inventors:
Takashi Ichiyanagi, Hirakata, JP;
Kiyokazu Imanishi, Higashiosaka, JP;
Hidetoshi Kawa, Ibaraki, JP;
Katsuyuki Yamamoto, Katano, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ; G11B / ;
U.S. Cl.
CPC ...
242179 ; 242182 ;
Abstract
A tape for a magnetic tape recorder or the like is taken up while the barometric pressure around the part of the take-up reel where the tape is being wound is kept below atmospheric pressure. The tape can thus be taken up in a stable manner at a high speed, by eliminating the tape floating force which is the basic cause of irregular take-up phenomenon.